For gcc4, I think it might pay to start enabling this on a per-package
basis (after the freeze, of course). I don't know enough about it to
know if there are any common cases where this would be
contraindicated, though.
For smaller libraries, AFAIK this is not that important, but for huge
ones with lots of long symbol names, it significantly reduces the
amount of work the run-time linker has to do.
Opinions?
--Blair